摘要
高增益直流变换器是新能源发电技术中实现并网的重要环节。为得到较高电压增益,提出了一种基于耦合电感的零纹波高增益组合式Sepic变换器。根据Sepic拓扑结构进行改进并集成,形成组合式Sepic拓扑,并引入耦合电感提升增益,实现了较小占空比下较大电压增益。通过两个电感耦合与参数的合理设置,变换器近似实现输入电流零纹波。最后,搭建了1台输入电压48 V、输出电压400 V、额定功率100 W的实验样机。实验结果与理论研究结果相符,验证了理论分析的正确性。
High-gain DC-DC converter is an important part of new energy generation grid connection.In order to obtain higher voltage gain,a zero ripple high gain combined Sepic converter based on coupled inductor is proposed.The basic Sepic topology is improved and intergrated to form the new combined Sepic topology,and to further enhance the converter voltage gain,a coupled inductor is introduced to eventually achieve a larger voltage gain with a smaller duty cycle.Through the reasonable configuration of the two coupled inductor and parameters,zero ripple of the input current is achieved approximately.An experimental prototype with 48 V input voltage,400 V output voltage and 100 W rated power is built.The experimental results are consistent with the theoretical results,which verifies the correctness of the theoretical analysis.
作者
张钟
徐玉珍
ZHANG Zhong;XU Yuzhen(College of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350108,China)
出处
《电器与能效管理技术》
2021年第11期73-79,84,共8页
Electrical & Energy Management Technology
基金
福州大学科研启动基金(2019-JJFDKY-24)。
